215473905

素因数分解:

$3^3\times 5^1\times {\mathrm{101}}^1\times {\mathrm{15803}}^1$

素因数の和:15918

約数の個数: 32

約数和(自身を含む): 386881920

約数和(自身を除く): 171408015

約数列:

[1, 3, 5, 9, 15, 27, 45, 101, 135, 303, 505, 909, 1515, 2727, 4545, 13635, 15803, 47409, 79015, 142227, 237045, 426681, 711135, 1596103, 2133405, 4788309, 7980515, 14364927, 23941545, 43094781, 71824635, 215473905]

約数ペア:

[(1, 215473905), (3, 71824635), (5, 43094781), (9, 23941545), (15, 14364927), (27, 7980515), (45, 4788309), (101, 2133405), (135, 1596103), (303, 711135), (505, 426681), (909, 237045), (1515, 142227), (2727, 79015), (4545, 47409), (13635, 15803)]